Handheld radar for measuring surface velocity of river-way

Abstract

The invention provides handheld radar for measuring the surface velocity of a river-way. The radar comprises a radar module, a processing module and a display module, wherein the radar module is used for transmitting a first radar wave to a liquid surface of the river-way and receiving a second radar wave reflected by the liquid surface, so as to generate Doppler beat frequency signals; the processing module is used for acquiring the angle of an incidence liquid surface of the first radar, and outputting the surface velocity by combining the Doppler beat frequency signals; and the display module is used for displaying the surface velocity. Compared with the prior art, the handheld radar provided by the invention can calculate the surface velocity according to the radar wave reflected by the radar module and the radar wave reflected by waves; furthermore, the handheld radar can be used for measuring the surface velocity precisely in a non-contact way in case of high-speed water current, sewage and floaters, even debris flow and slurry.

Description

technical field [0001] The invention relates to the field of measuring the surface flow velocity of water, mud and other liquids, in particular to a hand-held radar for measuring the surface flow velocity of a river channel. Background technique [0002] Existing river channel flow velocity measurement devices mainly include propeller type, rotary cup type mechanical flow rate meter or acoustic Doppler flow rate profiler (including walking type and side measurement type) for measurement. For example, the measuring device is loaded on a small boat, and the river water velocity in the river is measured by the small boat navigating on the river. As another example, the river flow velocity is measured through the drifting state of the artificial tracer on the river channel. The above two measurement methods are better for calm water or water with flat banks. However, for water surfaces with turbulent currents or passing through cliffs, the above two measurement methods cannot b...

AI Technical Summary

Problems solved by technology

For the water surface with turbulent water flow or passing through cliffs, the above two measurement methods cannot be used to measure the flow velocity on the surface of the river channel

[0003] In addition, the above measurement methods are contact measurement

For the measurement of the surface velocity of sewage, mud and other liquids containing corrosive components or impurities, as well as the measurement of floods, catastrophic floods, especially flood peaks, contact measurement will be subject to many restrictions

Furthermore, the contact measurement method requires a large number of personnel, a long measurement cycle, and low measurement accuracy. Especially, personal safety in mountain torrent measurement will also be threatened, which is very inconsistent with the modernization of hydrological measurement.

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